Allegro MicroSystems A4950ELJTR-T - Semicone IC Supplier

Mfr	Allegro MicroSystems
Device Type	Full-Bridge DMOS PWM Motor Driver
Output Configuration	Full Bridge (4 MOSFETs)
Load Voltage (VBB)	6.5 V to 40 V
Continuous Output Current	±3.5 A
RDS(ON) (per MOSFET)	0.25 Ω (typical)
PWM Control	PHASE/ENABLE or IN/IN (IN1, IN2)
PWM Method	Fixed Off-Time, Internal Oscillator
Current Sensing	Internal Sense FETs
Current Regulation (ITRIP)	Adjustable via VREF analog voltage
Protection Features	OCP; TSD; UVLO; Cross-Conduction Prevention
Operating Temperature	-40°C to +150°C
Package	8-SOIC-EP
Mounting Type	Surface Mount (SMD/SMT)
Compliance	RoHS Compliant

A4950ELJTR-T Motor driver DMOS analog
The A4950ELJTR-T from Allegro MicroSystems is a full-bridge PWM motor driver designed for bidirectional DC motor control applications requiring high efficiency and precise current regulation. This monolithic integrated circuit features a robust output stage capable of delivering up to 3.5 A continuous current and operating voltages from 8 V to 40 V, making it ideal for automotive systems, industrial automation, and robotics applications. Housed in a compact 8-pin SOIC package with an exposed thermal pad, the device incorporates a fixed off-time PWM current control circuit that regulates motor current based on an analog reference voltage, providing smooth and efficient motor operation across a wide speed range. The A4950ELJTR-T includes comprehensive protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable performance in demanding environments while simplifying system design through its integrated architecture.
A4950ELJTR-T Motor driver Applications
The A4950ELJTR-T is extensively used in automotive systems for throttle control, HVAC actuators, power seat adjustment, and mirror positioning where its high current capability and robust protection features ensure reliable operation. Industrial applications include CNC machine tool axis control, conveyor belt drives, and automated valve actuators leveraging the driver's precise current regulation and bidirectional control capabilities. Robotics systems utilize the device for joint actuation, wheel drive control, and gripper mechanisms benefiting from its smooth PWM operation and efficient power handling. Additional applications include medical equipment (hospital bed adjustment, infusion pumps), office automation (printer paper feed, scanner mechanisms), and consumer products (power tools, automated appliances) where reliable DC motor control with safety protections is required. The driver's compatibility with microcontroller interfaces makes it suitable for digitally controlled motion systems across various industries.
Alternative H-Bridge Motor DriverRecommendations
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● BD6222HFP-TR (ROHM Semiconductor): A 8 V to 42 V, 2 A H-bridge motor driver with low standby current and built-in error detection circuits.
● MC33887VW (NXP Semiconductors): A 5 V to 28 V, 5 A H-bridge motor driver featuring fault reporting and PWM frequency programmability for automotive systems.
● LV8761T-TLM-H (ON Semiconductor): A 4.5 V to 28 V, 3 A H-bridge driver with current control and integrated protection functions for automotive applications.